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Griffiths phase in the thermal quantum Hall effect
Mildenberger A., Evers F., , Mirlin A.D., Damle K.
Published in
Volume: 73
Issue: 12
Two-dimensional disordered superconductors with broken spin-rotation and time-reversal invariance, e.g., with px +i py pairing, can exhibit plateaus in the thermal Hall coefficient (the thermal quantum Hall effect). Our numerical simulations show that the Hall insulating regions of the phase diagram can support a sub-phase where the quasiparticle density of states is divergent at zero energy, ρ(E)∼1/z-1, with a nonuniversal exponent z>1, due to the effects of rare configurations of disorder (Griffiths phase). © 2006 The American Physical Society.
About the journal
JournalPhysical Review B - Condensed Matter and Materials Physics
Open AccessNo